<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="9">
          <el-input
            placeholder="请输入内容"
            class="input-with-button"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="7">
          <el-button type="primary" @click="goAddGoods">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- 表格区域 -->
      <el-table :data="goodsList" stripe border>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格(元)"
          prop="goods_price"
          width="95px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="70px"
        ></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="200px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeGoods(scope.row.goods_id)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'GoodList',
  data() {
    return {
      // 商品列表查询参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodsList: [],
      // 商品总数
      total: 0
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 获取商品列表
    async getGoodsList() {
      // 发起请求，获取商品列表
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })
      // 判断请求结果
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数失败')
      }
      // 请求成功后，将数据保存到goodsList
      this.goodsList = res.data.goods
      // 数据总数
      this.total = res.data.total
    },
    // 监听每页条数变化
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    // 监听当前页变化
    handleCurrentChange(newNum) {
      this.queryInfo.pagenum = newNum
      this.getGoodsList()
    },
    // 删除商品
    async removeGoods(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm') {
        // 用户取消删除
        return this.$message.info('已取消删除操作')
      }
      // 用户确认删除，发起删除操作
      const { data: res } = await this.$http.delete(`goods/${id}`)
      // 删除失败
      if (res.meta.status !== 200) {
        this.$message.error('删除商品失败')
      }
      // 删除成功提示用户并刷新列表
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    // 跳转到添加商品的页面
    goAddGoods() {
      this.$router.push('/goods/add')
    }
  }
}
</script>

<style lang="less" scoped>
.el-row {
  margin: 15px 0;
}
</style>
